/Engine/Plugins/Editor/SequencerAnimTools/Source/SequencerAnimTools/Public/MotionTrailTool.h
Test if target is hit by a click
hit information at this point
virtual [FInputRayHit](API\Runtime\InteractiveToolsFramework\FInputRayHit) IsHitByClick ( const [FInputDeviceRay](API\Runtime\InteractiveToolsFramework\FInputDeviceRay) & ClickPos )